Dual-frequency and four-arm helical antenna and handheld terminal using the same

Abstract

The present invention discloses a dual-frequency and four-arm helical antenna and a handheld terminal using the same, and belongs to the field of radio communication antennas. The dual-frequency and four-arm helical antenna comprises a coaxial line, a lead network, and a base, wherein the coaxial line is connected with the lead network. The dual-frequency and four-arm helical antenna is characterized by further comprising a helical antenna body. The helical antenna body is connected with the lead network and the base; the helical antenna body consists of four groups of helical arm units that have the same structure and spiral in the same direction; and each helical arm unit is composed of two helical arms which are spiral in a crossed manner. The present invention also provides a handset terminal using the dual-frequency and four-arm helical antenna. According to the dual-frequency and four-arm helical antenna and the handheld terminal using the same, the difficulty in widening the bandwidth of the antenna, increasing the gain bandwidth, and increasing the low elevation angle gain of the antenna without increasing the antenna volume can be solved.

Description

technical field [0001] The invention relates to the field of radio communication antennas, in particular to a dual-frequency four-arm helical antenna and a handheld terminal for its application. Background technique [0002] In the field of radio communication technology, antennas have been widely used in the fields of GPS reception and low-orbit satellite communications, including spaceborne and ground use, and personal mobile communications. In the current radio communication field, quadrifilar helical antennas are widely used. In the case where GPS and Beidou satellite frequencies need to be received at the same time, that is, when dual-frequency work is required, a dual-frequency four-arm helical antenna needs to be used. [0003] At present, the traditional dual-frequency quadrifilar helical antenna includes two single-frequency quadrifilar helixes stacked up and down or nested inside and outside. The dual-frequency four-arm helical antenna is realized by stacking two...

AI Technical Summary

Problems solved by technology

The dual-frequency four-arm helical antenna is realized by stacking two single-frequency helical antennas up and down. This implementation method not only increases the size of the antenna, but also increases the difficulty of debugging, and the mutual influence between the two frequency bands is large, resulting in relatively low antenna gain. low, narrow bandwidth

The dual-frequency four-arm helical antenna is implemented by nesting two single-frequency four-arm helixes inside and outside. Although the size of the antenna does not increase in this implementation, the radiation effect is poor, and the mutual influence between the two frequency bands is large, resulting in Antenna gain is low and bandwidth is narrow

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